SuperEvac™ Vacuum Pump for Ammonia and NH3 Systems

Operation and Maintenance Manual

Models: 93530, 93533, 93539

English…….....pages 1-9

Español...........páginas 10-18

Français..........pages 19-27

Deutsch...........seites 28-36 PN 142884 Rev.D 6/19

Important Notices to Purchaser

Check for damage immediately.

All YELLOW JACKET SuperEvac™ vacuum pumps for ammonia and NH3 systems are completely tested and inspected to assure compliance with Ritchie factory specifications prior to shipment. If the pump carton is damaged, check contents im-mediately. Note damage on shipper's Bill of Lading and have shipper sign your statement. Notify the carrier immediately of the damage to arrange inspec-tion of the pump and packaging. The CARRIER ALONE is responsible for handling and settling your claim. Ritchie Engineering will cooperate in assessing damage if the pump is re-

turned to the factory prepaid. Carton contents include:

SuperEvac™ Vacuum Pump for Ammonia and NH3 Systems.

Bottle of YELLOW JACKET® SuperEvac™ Pump Oil

Owner's manual

Table of Contents Page

How to obtain service…………………...…………………………………………………………..…….. 2

Features of your new pump.......................................................................................................................... 3

Warranty Information………………………………………………………………...…...………………..3

The purpose of the SuperEvac™ design........................................................................................................4

The 7 important steps of initial start-up........................................................................................................4

Oil changes……………………………………………………………………………………...….…...… 5

Vacuum tips for best performance............................................................................................................... 5

Dual voltage motor power conversion (if applicable)…………………………….………………………..5

Basic troubleshooting................................................................................................................................... 6

Diagnostic chart........................................................................................................................................ 7, 8

Replacement parts..................................................................................................................................... 8, 9

2

How to Obtain Service

Most returned pumps are merely in need of normal field service maintenance, such as changing oil or making minor adjustments. In many instances, the troubleshooting information in this manual can save you the time and effort of returning your pump. When the information contained in this manual, however, does not solve the problem, please call for service. In the U.S. call the Ritchie Engineering Customer Service Department: Phone: (952) 943-1333 or (800) 769-8370 Fax: (952) 943-1605 or (800) 322-8684 E-mail: custserv@yellowjacket.com

A representative will help to determine if the prob-lem can be solved without sending your pump to the factory and taking it out of service. Returns: If the pump does need to be returned to the factory, and you are in the U.S., DRAIN THE OIL and send the pump - freight prepaid - to: Ritchie Engineering Company, Inc. Customer Service Department 10950 Hampshire Avenue South Bloomington, MN 55438-2623 USA If you are in a country other than the U.S., please contact the wholesaler from whom the pump was purchased.

1. Male pipe pump intake. Large hose suggested for maximum pull down.

2. Gas ballast valve helps remove moisture and other condensable vapors that have been drawn into the pump as a result of evacuation. Opening the ballast allows fresh air to enter the pumping chamber and keep vapors from combining with the oil. Vapors escape harmlessly through the

exhaust valve. If combined with oil, vapors can turn the oil milky white and lower pump perfor-mance below specifications.

To operate ballast, turn the valve counter-clockwise one full turn after evacuation starts. As the vacuum reading reaches 1000-2000 microns, close the ballast to achieve a deeper vacuum.

3

1) Male pipe pump intake (see below)

Heavy duty high torque motor for cold weather starting.

Longer heat dissipation fins for a cooler running unit.

Lower operating temperature to improve efficiency and vacuum.

High resiliency foot pads for added stability and skid resistance.

Heavy duty metal handle. Permanently attached to pump body. Built-in hook hole.

Pump exhaust also doubles as oil fill port. Use YELLOW JACKET

oil for assurance of a clean,fast job.

Wide-view sight glass for easier

Monitoring of oil level.

Oil drain valve for quick draining

and convenient access.

2) Gas ballast valve (see below)

WARRANTY INFORMATION

Ritchie Engineering guarantees YELLOW JACKET products to be free of defective material and workmanship which could affect the life of the product when used for the purpose for which it was designed. This warranty does not cover items that have been altered, abused or returned solely in need of field service maintenance. If found defective, we will either replace or repair at our option products within two years of proof

of purchase. Warranty does not cover items that have been altered, abused (including failure to use the correct type of vacuum pump oil) or returned solely in need of field service mainte-nance. Returns must be pre-paid. Warranty does not cover use on lithium bromide systems.

Features of your New Pump

The 7 Important Steps of Initial Start-Up

The Purpose of the SuperEvac Design

The SuperEvac Pump is a 2-stage rotary vane design (at right) that increases efficiency and speeds pump down to 15 microns.

The pump lowers the internal pressure of a refrigera-tion system until moisture boils into a vapor. As the moisture is vaporized, it is evacuated by the pump, helping dehydrate the system. Most technicians try to achieve between 250 and 1000 microns.

A manometer or electronic vacuum gauge are the only ways to monitor evacuation progress. Manome-ter readings are approximate in inches of mercury. Only an electronic vacuum gauge is accurate enough to show when you reach the desired micron range.

As the chart shows, only an electronic gauge reads fine differences to provide assurance that the vacu-um is low enough to boil the greatest possible amount of moisture.

How one small drop dampens your profits.

A small drop of moisture can hurt your profits and reputation.

During new system set-up, protective caps are re-moved admitting moisture and air into system com-ponents.

If air – a non-condensable – remains in the system, it collects on the high side reducing system efficien-cy. This causes a rise in head pressure. The dis-

charge valve gets hotter than normal and organic solids form causing compressor failure.

Moisture in the system can form ice which closes off openings in expansion valves and cap tubes, and prevent adequate cooling.

Ultimately moisture and air can produce acids and sludge which could cause in-warranty failures.

During service and parts replacement, the same contaminants get in again, and you could be called back for repairs by a dissatisfied customer.

Moisture and air can even enter through system leaks. And as the moisture in the air increases, so does the amount of contamination. The higher the humidity, the bigger your problem.

A vacuum pump "pulls" air and moisture out of the system before the system is damaged. The higher and more complete the vacuum, the more moisture is removed. That's why your SuperEvac pump is specifically engineered for high vacuums of 15 microns and better.

Boiling temp of water

Inches mercury

Microns

212°F (100°C) 0 760,000

151°F (66°C) 22.05 200,000

101°F (38°C) 27.95 50,000

78°F (26°C) 28.95 25,000

35°F (2°C) 29.72 5,000

1°F (17°C) 29.882 1,000

- 50°F (-46°C) 29.919 50

First stage exhausts into the intake of the second stage similar to two single stage pumps connected together.

1) Make sure motor is off and name plate volt-age on motor bottom matches outlet voltage.

2) Remove exhaust filter. Fill with YELLOW JACKET SuperEvac Pump Oil until oil level is even with oil level line. Replace exhaust filter.

3) With the intake port open, switch on the motor. When pump reaches running speed, connect the pump to the system.

4) To check the pump's performance, attach a

micron gauge to the intake port, making sure that the gas ballast valve is closed. Turn on the pump. The micron gauge will display the ultimate vacuum reached.

5) Improve cold weather starting by opening intake and running your pump for 10-15 seconds.

6) Before turning pump off, break vacuum to atmosphere.

4

5

7) Disconnect pump and cover the intake to keep out contaminants.

If an extension cord is needed, refer to the chart for proper sizing:

RECOMMENDED EXTENSION

CORD SIZES

Total Extension Cord Length (Feet)

25' 50' 100'

16 Ga. 14 Ga. 12 Ga.

Wire Gauge (AWG)

CHANGE OIL AFTER EACH USE to protect pump components from contaminants pulled into pump during service. Place used oil in a sealable container and dispose properly in accordance with local regulations.

YELLOW JACKET vacuum pump oil is special-ly refined and formulated for extremely low vapor pressure and high pump efficiency at all tempera-ture conditions. This means it can help you get a continued return on your pump investment.

Oil Changes

Vacuum Tips for Best Performance

1) For the fastest vacuum, connect your pump directly to the system. Going through a manifold slows the job.

2) Use as large a hose as possible, even though the system has 1/4" fittings. A 1/2” or 3/8” hose allows a much faster and more com-plete vacuum.

3) Use as short a hose as practical to get maxi-mum evacuation speed. Short hoses make evacuation faster than longer hoses. Long hoses slow the process.

4) Metal hoses are the most impervious so will be most effective in evacuation.

5) Evacuate through both high and low sides at the same time to speed evacuation.

6) Use two pumps on very large systems to reduce vacuum time.

7) Do not use hoses with brass fittings on ammonia systems. Brass and copper are chemically incompatible with ammonia and will corrode on contact.

STEP 1 Disconnect the motor from the power supply and remove. Remove the yellow “CAUTION” sticker from the back of the motor. STEP 2 Pull up on the white plastic “arrow” switch using needle-nosed pliers until the switch is loose inside the motor housing (it will not come completely out of the motor). Note: Do not try to turn or rotate the switch until it has been pulled up and is loose.

STEP 3 Point the arrow toward the desired voltage setting and push the switch back down into the motor. The arrow on the switch should be sub-flush of the motor housing when correctly installed at the desired voltage. HI = 230 VAC / 50 Hz LO = 115 VAC / 60 Hz STEP 4 Replace the yellow “CAUTION” sticker over the voltage selector switch. Ensure that the voltage setting corresponds with the power supply that the motor is plugged into. *Warranty is void if the set vacuum pump volt-age does not match the power supply. Dual volt-age motors are factory set to 230V/50Hz.

Dual Voltage Motor Power Conversion (if applicable)

1) "Will not pump." This usually means the

pump will not pull a deep enough vacuum. This can be caused by a bad seal on the gas ballast valve or contaminated oil.

SUGGESTION: Change gas ballast “O”-ring, change oil twice and recheck vacuum.

2) "Will not pull below 1000 microns."

SUGGESTION: Check gas ballast “O”-ring. Test pump to determine actual pull down. Remove all hoses and connect vacuum sensor directly to pump.

3) "Noisy." Pumps are noisy when they have not achieved a high vacuum. In intermediate vacuum, there will be oil, vane and exhaust noises.

SUGGESTION: Listen to the pump at high vacu-um. If relatively quiet, the pump is running properly. If still noisy, there may be a system leak.

4) "Repair and return." This is the most diffi-cult return comment to handle, since we are unsure of what needs to be done to keep the customer satisfied.

SUGGESTION: Be specific about the problem with your pump if returning it. Please include a separate sheet of paper documenting your prob-lem.

Starting problems

Be sure pump is plugged into live receptacle with line voltage plus or minus 10% of volt-age on motor nameplate. Long extension cords can greatly reduce voltage and cause problems.

Pump/oil temperature must be 30°F (-1°C) or higher. Open intake to atmosphere and switch on pump; run up to speed before connecting to system.

Your SuperEvac pump features a heavy-duty high torque motor for cold weather starting, but dirty oil makes starting more difficult, causing unnecessary wear on your unit.

Dropping your pump can damage it. In a locked pump condition, motor will not run and the thermal overload will kick out.

Disconnect power cord and set pump with front cover face down on table. Reach into coupling area and try to rotate the coupling. Do not use pliers. if the pump does not ro-tate, it is “locked up.”

Oil leakage

If leak develops between front and rear half of oil case, tighten all seven screws. Replace gasket if necessary.

If shaft seal leaks, replace it.

Wipe pump dry and watch for source of leak. Tighten screws and repair.

1) Check oil level when pump is running. It should be at or above the indicated levels...the level necessary for proper operation.

2) Check all connections. Make sure they are tight. Put vacuum pump oil on gas ballast “O”-ring.

Basic Troubleshooting

6

Note: This unit generates a deep vacuum that can be harmful to human tissue. Do not expose any part

of the human body to the vacuum.

Do not operate this unit with the exhaust blocked or restricted.

Keep unit a minimum of 4” (10 cm) from objects for adequate cooling of motor.

Continuous sound pressure level of this unit can exceed 70dB (A).

Vacuum pump exhaust may contain harmful vapors. Provide adequate ventilation.

7

Diagnostics Chart

Poor vacuum

Quiet pump

Exhaust

Seal

Case

Oil Leaks

Ultimate vacuum of pump - does not meet mfg. spec (read with thermocouple)

Pump won’t start

Motor stalled hot/cold

Thermal

Condition Pump Area Possible Problem Solution

Dirty oil Flush 1 to 3 times

Coupling or set screw loose Repair or replace

Bad exhaust valve Repair or replace

Pump not oiling Call factory

Vanes not functioning Call factory

Stator misaligned Call factory

Worn pump bearings Call factory

Pump dropped Call factory

Bad thermocouple Clean or replace

Bad motor Repair or replace

Dirty oil Flush 1 to 3 times

Air leaks Repair or replace

System leaks Isolate/repair

Fitting sealant compound Repair or replace

System leaks Repair leaks

Low oil level Add/replace

Dirty oil Flush 1 to 3 times

Worn pump Replace module, call factory

Air leaks at fittings or gasket seals Replace/repair

Oil level high Adjust oil level

System vented pressure through pump Check oil level, add or replace oil

Pump tipped over Check oil level, add or replace oil

Pump shaft Repair

Worn or damaged seal Replace

Motor loose Adjust/tighten, check seal

Gasket bolts loose Tighten

Oil drain fitting Repair or replace

Gasket damaged Replace

Damaged motor Repair or replace

Damaged pump Replace/call factory

Closed gas ballast on pumps Open intake fitting and gas ballast

Low voltage Shorter extension cord

Cold weather cut-out Open intake fitting for 1 minute to warm up while starting

Dirty oil Flush 1 to 3 times

Noisy pump

8

Pump

Motor

Unusually noisy

Pump

High temp

Condition Pump Area Possible Problem Solution

Worn motor Replace motor

Loose motor bolts Tighten bolts

Coupling drive Adjust/replace coupling

No end play on shaft Adjust coupling

Dirt, low, improper oil Flush and replace oil

Air leaks:

1) caps/connection Tighten

2) Gaskets/”O”-rings Replace/put on oil

3) Fittings Replace/reseal

Damaged or worn bearing Call factory

Damaged or worn stators Call factory

Pump out of adjustment Call factory

Low voltage Short extension cord

Dirty oil Flush and replace

Low oil Add/replace

Lint/foreign material Open gas ballast

Parts friction Replace oil/call factory

Too small for system Size pump for system

Air leaks Replace/repair

Motor

4

2

1

12, 13, 14, 15

4

6, 7

16 or 17, 18, 19, 20, 21, 22

26 10

3

9

5

8

28

Pump Oil Cover

1. Complete cover (individual parts listed below)

92955

2. Handle with screw 92941

3. Exhaust filter assembly 93386

4. Oil fill/intake fitting 93359

5. Pair of Sight Glass Screws 92933

6. Sight Glass Bezel 92934

7. Sight Glass and Gasket 92935

8. Tether 92932

9. Cover Label 92946

10. Oil Drain Plug 92956

Vacuum cartridge

11. Complete cartridge with oil cover gasket

92957

Mounting body

12. Complete body (individual parts listed below)

92958

13. Ballast Plug 93358

14. Shaft seal 93354

15. “O”-ring for gas ballast 93398

Damaged cords must be replaced by special assemblies available from the manufacturer or its distributors.

Motor

16. 1/2 hp - 230V/50 Hz* (includes items 18 and 19)

1/2 hp 93513

17. 1/2 hp - 115V/60 Hz* (includes items 18, 19 and 20)

1/2 hp 93505

18. 8/32 x 7-1/4” motor bolts (4) 93099

19. Rocker style switch 93117

20. 8’ long cord 93115

21. 8’ long EU cord (detachable IEC-320)

95431

22. 8’ long UK cord (detachable IEC-320)

95432

Final assembly parts

23. 8/32 x 5/8” socket head screws 93506

24. Oil cover gasket 92942

25. Drive coupling 93047

26. Right or left leg assembly with screws

93034

27. Cartridge Baffle 92940

28. Shoulder Strap Mount 92943

9

Model Voltage Fre-quency

Cur-rent

Weight

93530 60 Hz 115V 30.8 lbs. (14.0 kg)

7A

93533 50 Hz* 230V* 32.5 lbs. (14.7 kg)

4A

*The 93533 is factory wired for 230V. It can also be configured for 115Vac. Remove the motor switch plate and make connections as shown on the motor label.

Ritchie Engineering Co., Inc. YELLOW JACKET Products Div. 10950 Hampshire Ave., S. Bloomington, MN 55438-2623 USA

Phone: 800-769-8370 Int’l Phone: 952-943-1333 Fax: 800-322-8684 Int’l Fax: 952-943-1605

e-mail: custserv@yellowjacket.com Website: www.yellowjacket.com

©2019 Ritchie Engineering Co., Inc. Printed in U.S.A. Part #142884 Rev. D

Replacement Parts Models 93530, 93533, 93539 - 8 CFM (190 L/M)